Quote:
Originally Posted by julianburke
They also had a first with the "Colortone" control on the front with the color controls. It changed the tracking of the tube to move the monochrome picture from a sepia to a bluish screen (w/B&W in the middle) much like the computer monitors do now.
|
This control was on some of the chassis that used the one-tube color section ("SODPIL" - self-oscillating, detecting, phase injection lock). It was needed because in this cost-cutting design the demodulator outputs were direct coupled to the CRT grids rather than keyed-clamped like the RCA designs. So, adjustment was needed to get proper tracking. Some even cheaper chassis deleted the customer adjustment. Most people could not adjust their color sets when they had two color controls, and these sets had three.
Unfortunately, this was NOT like a computer monitor color temperature adjustment, since it was varying the DC bias, not the RGB gains.
12-11-2011, 05:42 PM
Threaded Mode